Ore-dressing machine.



H. G. KING. ONE DRESSING MACHINE. APIfLIoATxoN HLED AUG. 3o, 1909.

Patented Sept. 27, 1910.

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Hol/VARI) G. KING, OF DENVER, COLORADO.

ORE-DRESSING MACHINE.

Application tiled August 30, 1909.

To all whom it may concern:

Be it known that I, l-lowann G. KING, a citizen of the United States of America, residing in the city and county of Denver and State of Colorado, have invented a new and useful Ore-Dressing Machine, of which the following is a specification.

My invention relates to improvements in ore dressing machinery, and the objects of my invention are: First, to provide an ore feeding, crushing, pulverizing, and screening mill. Second, to provide a grinding mill in which the ore or other material to be crushed and pulverized is fed in a rotative path continuously onto the tread rings in front of the crushing and pulverizing rolls. And third, 'to provide a grinding mill in which the weight of the hopper and feed mechanism is added to the weight of the crushing rolls to increase their pressure againstfthe material being crushed. l. attain these objects by the mechanism illustrated in 'the accompanying drawings, in which:

Figure 1, is an end elevation of the improved ore dressing machine. Fig. 2, is a vertical, longitudinal sectional view of the same, on the line 2-2 of Fig. 1. Fig. 8, is a vertical sectional view showing the twopart circular base, which supports the 'tread ring, the revoluble distributing receptacle and the crushing rollers. Fig. 4, is a plan view of the two-part base. Fig. 5, is a side view thereof. Fig. 6, is a plan view of the two-part casing around which the 'tread ring is placed. Fig. 7, is a plan view of a portion of the two-part tread rin g, showing the manner of connecting the parts. Fig. 8, is a sectional view through one of the crushing roller bearings. And Fig. 9, is a bottom view of the conical feed plate.

Similar letters of reference refer to similar parts throughout the several views.

Referring to the accompanying drawings, the numeral 1, indicates the base, which is in the forni of a 'two part, inverted, conical ring, the meeting edges of which are formed with apertured lugs 2, which receive securing bolts 8, by which the two members are secured together. A. platform 4, of less diameter than the upper edge of the base, is integrally connec'ted thereto by a depending rim 5, which is` formed with a plurality of opertures 6, which permit ore or other material to pass down and over the lower edge of Specification of Letters Patent.

the base, and into a screen, as will fully ap- Patented Sept. 27, 191th serial No. 515,249.

pear hereinafter. The platform Il, is on a level with the upper edge of the base, and is divided cen'trally the same as the said base. The base is supported upon legs T, which are bolted to a two-part foundation plate S.

A circular housing 9 of suitable height, is secured to the upper portion of the base, and four uprights 10, are secured to the base and to the housing, and extend up a suitable distance above the housing. rlhese uprights are arranged in opposite pairs, and each pair are connected at their upper ends by metal strips 11, while each two oppositely positioned uprights are connected at their upper ends by angle bars 12, and between said angle bars and the housing, by angle' bars 13 and lil.- These uprights and angle bars form a supporting structure, which is braced by bars 15, which diverge from the upper corners of the structure, and are cured at their lower ends to the base.

YUpon the platform L1, is supported a twopart cap or fasing 1G, having a central hub 17. This cap is of less diameter than the platform, and around the peripheral edge of the same is placed a ring` 18, and around the ring 1S a two-part tread ring 19, which rests upon the platform, and is ush with its peripheral edge. This tread ring is composed of two half sections, the meeting edges of which are provided with apertured lugs 2O (see Fig. 7), through which securing bolts 21 pass. The parts of the cap 16 are provided with apertured lugs 22, which receive securing bolts 23. A. pair of crushing rollers 24, are adapted to travel upon the tread ring 1f), and these rollers are formed with integral hubs 21l-^, which are adapted to t-urn in bores 26, formed in journal bearings which are bolted to the bottom of a revoluble ore receptacle, as will bc presently shown. rllhe hubs 211A are formed with oil apertures 27, which extend through to the bore of the hub, and theborcs 2G of the liournal bearings 25, terminate in bores 28, which are in line with and of the same diameter as the bore of the hubs 2LJLA, and through the rollers and their hubs 2@ and the bores 2S of the ournal bearings 25, extend short hollow shafts 29, the inner ends of which are secured in the opposite ends of a cross 30. The journal bearings are made fast to the shafts 29 by set screws, as shown in Fig. 8, and upon the outer end of the shafts are screwed caps 29A, which enter circular depressions or recesses 29B in the outer faces of the rollers, and these caps are prevented from working ott' the shafts by pins 29C, which extend through the caps and end of the shafts. The shafts 29 are provided with oil apertures 29D, which communicate with the axial passages 29E in the shafts, so t-hat oil may flow through the shafts and woili out through the apertures QQ to the bores of the roller hubs. and thence through the apertures "2T to the bores 2G of the bearings Q5. and the oil is supplied in a manner to be presently shown. The rollers turn upon the sha tts 2t), and their hubs Qi* turn within the bo 'es 26 of the bearings 25. and the rollers are retained upon the shafts by the caps 29A. The outer ends of the bearings extend into recesses 291" in the inner faces of the wheel, and this construction presents an effective means of preventing the entrance of dust or I,grit to the interior of the bearings.

A hollow shaft 3l, extends from the upper end of the cross to the top of the machine, and a hollow shaft 32, extends fiom the lower end of the cross down through the hub 1T of the cap 16, and through a bearing 33, mounted in a cential aperture of the platform et. The lower end of the shaft 32. is plugged as shown at 52, F ig. 3, and an oil aperture 3i is formed in the shaft so as to communicate with the bearing 33. coupler 2135, is screwed upon the lower end of the shaft and a shaft 2?(3 is screwed therein, and extends down a suitable distance below the base, and a spider :3T is bolted upon its lower end. .t wheel is secured by a set screw to the shaft Iit, a slight distance below the lower end ot' the base, and this wheel is preferably an ordinary cast iron band wheel of slightly greater diameter than the lower end of the base, and against the lower end of its hub is secured by boltsl 38A a sheet metal disk 239, of diameter than the wheel, so as to leave an annular space between its peripheral edge and the rim of the wheel. Around the wheel is secured the upper end of an inyerted conical screen 40, by means of a nieta'l band atl, which clamps the screen upon the wheel. and this band may be secured against displacement by bolts which pass through the band and through the rim of the wheel. The screen is secured aboutmidway of its length to the spider 3T. and in its lower end, which is formed with a discharge opening. is secured a short section of pipe JAA, which extends loosely into a discharge spout conical chute surrounds the screen, and lies parallel with it, but is enough larger than the screen to leaye a space of suitable width between it and the screen, for the pasof the screened material, as will presently be shown.

Upon the lower end of the chute is secured a spout ed, which receives and discharges the material from the chute. The spout 42 l i l l l l l l l i l l l passes through the spout 41st, so that the coarse and tine materials are kept separate from each other. and is secured to the chute in any preferred way. llpon the u'pper end of the shaft 3l, is screwed an oil cup l5, which supplies oil through the shaft Bl, cross 30, and shafts Q9, to the journal bearings Q, as aboye described, and through the shaft 32 and aperture 34; to the bearing 33. ll pon the ournals 25 is secured a cylindrical ore receptacle 46, through the axial center of which passes the shaft 3l. and from opposite sides of the bottom of this receptacle depending' distributing pipes -l-l extend to within a slight distance of the tread ring it). Shield plates QCS, which are semi-circular in cross section, are secured at their upper ends to the receptacle 6, and extend down parallel with and adjacent to the distributing pipes 4T, and their lower ends terminate i slight distance aboye the tread ring. These plates p-reyent the oi'e discharging from the pipes from sliding over the edge of the tread ring.` and as the rollers tra rel upon the ring, the receptacle revolving with it. as will be presently shown, the plates, ach of which is in adyance of one of the rollers. will level oft the ore to a uniform depth oyer the sui'- face of the tread ring, and thus facilitate the action of the rollers. It coni al distributer ift). is secured to the shaft ill, aboye the receptacle at), and is of less diameter than the said receptacle.y and aboye this distiibuter is an adjustable. conical feeder 5t), which lies over and adjacent to the distributer, and is supported upon rods 5l, which pass through the angle bars 14, and are held by nuts SQ. which are screwed upon the threaded ends of the rods, and against the angle bars. The under face of the conical feeder is formed with tangential ribs 53, and when the feeder is adjusted to the proper distance relatiyely to the distributer if), the ribs worl; the ore out over the circumferential. edge of the distributer, as will presentl)7 appea The apex of the feederl 5t) terminates in a hub 5l. which surrounds the shaft 3l, and is of considerably grlater diameter than said shaft, and in this hub is secured the discharge neck of a conical hopper which is supplied from a chute Upon the angle bars 13, is secured a bearing block 5T. which surrounds the shaft ill. and this blocli is formed with a ball race 5S, in which is placed anti-friction balls 5f), and upon the balls rests the hub G0 of a bey/cl `gear wheel Gl. the said hub being also formed with a ball racc corresponding to the one in the block 5T. The huh (SO is formed with a yertical grooye G2, in which lits a spline 63, which is rigidly secured in the upper portion of the shaft 3l, and this spline is adapted to slide in the grooyc GQ, as the shaft Sl descends, owing to the wear upon the crushing rollers and the tread ring 19.

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A shaft G4, is mounted in bearings scoured to the upper' angle bars 12, and upon this shaft is secured a bevel pinion (3G, which meshes with the gear wheel 61, and upon the outer end of the shaft G4 is secured a band pulley 67, which is connected with a source of power.

ln operation, the machine is set in motion, and ore or other material which has first been crushed to a degree of ineness suitable for treatment in the herein described machine, is fed from the chute 5G, into the hopper 55, and falls upon the distributor 49, which revolves with the shaft 31, and is fed down over the circumferential edge of the said distributer by the conical feeder 50, its ribs preventing clogging of the ore and insuring its discharge from the distributer. The ore falls in a circular sheet into the revolving receptacle 46, and passes out through the distributing pipes 47, upon. the tread ring 19, and is prevented from flowing over the edge of the ring by the shields 4S, which also level the ore to a uniform depth upon the tread ring, as above stated. r1`he ore falls upon the tread ring in advance of the rollers, and as they travel around the ring, the ore is crushed and pulverized by the said rollers, which are of suiiicient weight for the purpose, and discharges over the circumferential edge of the ring and falls upon the conical base ring 1, between the said base ring and the rim 5 of the platform 4, and passes through the apertures 6 in the rim and falls upon the disk 39 of the wheel 38, where it is discharged by centrifugal force upon the upper end of the screen 40. The ore passes down over the surface of the revolving screen, which is of a suitable mesh for the purpose required, and the fine material passes through the screen and into the conical chute 43, while the coarse material passes out through the spout 42 at the bottom of the screen, where it is collected and reserved for regrinding. The fine material is led to a separate receptacle by the spout 44, and is ready for concentration or other suitable treatment. The two-part feature of the base 1, the tread ring 19, and the cap 16 facilitate shipping or repairing of the parts, and the hollow shafts which are supplied with oil provide for constantly and automatically supplying the lubricant to the roller and shaft bearings. Moreover, the sliding feature of the shaft 31, within the gear wheel 61, consequent upon the wearing away of the crushing rollers and tread ring, prevents the said gear from getting out of mesh with the pinion 66.

Having described the invention, what I claim as new and desire to secure by Letters Patent, is:

l. In an ore dressing machine, a supported base; a frame secured to said base; a gear wheel rotatably mounted upon said frame; a vertical shaft, one end of which has a sliding engagement with the hub of said gear wheel, but adapted to turn therewith, and means for rotating said gear wheel; lateral shafts secured to said vertical shaft; vertical disk-shaped crushing rollers mounted on said shafts; a horizontal tread ring on said base upon which said rollers are adapted to roll; a circular receptacle supported upon said roller shafts, and adapted to revolve with said shafts and said rollers; a conical distributer secured to the vertical shaft above said receptacle; a conical feed disk adjustably mounted upon said frame relatively to said conical distributer, to form a feed passage between said distributer and said feed disk, said feed disk being provided with a hub which surrounds said vertical shaft loosely; a conical hopper, the lower end of which lits into said hub and which surrounds said shaft; means for feeding ore from said receptacle in advance of the rollers; a casing surrounding said receptacle and said rollers and said base, and provided with an inverted conical chute portion; a conical screen secured to the shaft below said base and ar anged to-receive the pulverized ore from said tread ring and the chute por tion of said casing; a conical chute surrounding said conical screen and. attached to said base; and separate discharge spouts at the lower ends of said screen and chute.

Q. In an ore dressing machine, a base in the forni of an inverted conical band; a platform of less diameter than the upper edge of said base and integrally secured to said base by a rim having a plurality of apertures; a two-part tread ring secured to said base; a vertical shaft extending above and below said base and through the axial center of the same; lateral shafts secured to said vertical shaft, and means for rotating said vertical shaft; crushing rollers having projecting hubs which extend into said bearings, and which are adapted to travel on said two-part tread ring; caps on the outer ends of the late al shafts, which are adapted to hold said rollers in place; a circular receptacle secured to said bearings and adapted to rotate upon its axis with said rollers; pipes connected to the bottom of said receptacle and adapted to feed ore in advance of said rollers; shields for preventing the ore from said pipes from discharging over the edge of said tread ring and for leveling the ore to a uniform depth on said ring; means for feeding ore to said receptacle; a conical screen on the lower end of said shaft below said base; a disk for receiving the ore as it discharges from the base through the apertures of said platform rim and for' discharging said ore by centrifugal force against the upper portion of said screen; and a conical chute surrounding said screen.

2). ln un ore dressingninchine, a two-puit buse; u two-part tread ringmounted upon smid buse, und un upright t'runie secured to said buse; u driven pinion secured to said traine; a gear wheel in niesh with said pinion und u hollow shaft in slidingv engagement with the huh of said gear wheel, but :ulupted to rotate therewith, und un untit'rietion bearing for said gear wheel, which is mounted upon suid traine; a cross Coupling secured ut its upper end to the lower end ot' said shaft; lateral hollow shafts projecting troni opposite ends of said cross coupling; bearings secured upon said luternl shafts; rollers lim/'ing hubs which project into said bearings, said rollers beingl adapted to travel upon said tread ring; Cups secured upon the outer ends of said lateral shafts, which secure said rollers against dis- )lucenientu heurine in the axial center of base; u disk secured upon the lower side of seid wheel, of less diameter than the inner surface of said wheel;` u receptacle upon the bearings of said rollers; pipes in the bottoni of Suid receptacle; und Ineens for feeding inuteriul in u uniform streuin to suid reeeptacle.

'In testimony whereotl I uflix my signature in presence of two witnesses.

HONARD G. KING.

Titnesses G. SARGENT ELLIOTT, ADELL M. FowLn. 

